Chapter 3.2

Question 1

what changes in action potential?

Answer 1

frequency, number and time

Question 2

synaptic transmission:

Answer 2

electrical impulses travel from one neuron to another across a tiny junction known as a synapse.

Question 3

describe the neural circuit:

Answer 3

1. stimulation of the dendrites of pre-synaptic neuron
2. Information passed to cell body
3. action potential occurs ( sodium enters neuron, potassium exits the neuron)
4. action potential reaches the terminal buttons
5. release of a neurotransmitter
6. neurotransmitter binds at receptor cites of post synaptic neuron
7. release of neurotransmitter from post synaptic neuron
8. reuptake of neurotransmitter by pre-synaptic neuron.

Question 4

what is the difference between negative and positive symptoms?

Answer 4

positive means something a normal person doesnt usually have like seeing something. Negative is something not understanding social situations.

Question 5

malfunctions of serotonin:

Answer 5

depression- decreased levels
Srotonin syndrome- increased levels. Increased heart rate, myoclonus, over-responsive reflexes, high blood pressure, mental confusion, hallucionation and coma

Question 6

Agonists:

Answer 6

are drugs that increase the action of a neurotransmitter ex.) Bromocriptine mimics dopamine for parkinsons disease

Question 7

Antagonists:

Answer 7

are drugs that block the function of a neurotransmitter ex.) clozapine block dopamine receptors used in schizophrenia.